NM-A221 BIOS Dump
Part of NM-A221
NM-A221: 9 BIOS files found in the source channels. The board is used in the Lenovo ThinkPad E550, Lenovo ThinkPad E550C and Lenovo ThinkPad Edge E550. 7 of them are marked as tested by the uploader. Board revisions: 1.0.
BIOS files 9
FileSizeRevAddedSource
From the uploader
LENOVO THINKPAD E550 AITE1 NM-A221 REV 1.0 2014-09-12 i3-4005U WORKING BIOS & KBEC 100%
LENOVO THINKPAD E550 AITE1 NM-A221 REV 1.0 2014-09-12 i5-5200U WORKING BIOS & KBEC 100%
LENOVO THINKPAD E550 AITE1 NM-A221 REV 1.0 2014-09-12 i7-5500U WORKING BIOS & KBEC 100%
Laptops that use NM-A221
- Lenovo ThinkPad E550
- Lenovo ThinkPad E550C
- Lenovo ThinkPad Edge E550
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |